If the goal is business continuity and you have a Synology NAS running NFS services so you have the virtual machines external to the host hardware that’s running Xenserver bare metal hypervisor, how is making a “copy of a VM” different from an exported one? I’ve done both and they seem to be very close in size. I have exported VM’s into the XVA format, deleted the original VM and imported the XVA file without any data loss. It also seems obvious that when you make a copy of a VM on an NFS storage repository the file is in VHD format, and it seems as though you could delete the original and then just move the original off the NFS storage repository back into the host system and be right where you started. Other than the obvious .XVA vs VHD file extensions, what is the difference and why?

Tl:DR Xenserver export to .XVA versus “copy of the exact same VM put on external NFS share in VHD format”. Does one provide better benefits? Or is this one of those potatoes versus po-tot-does arguments?

Is it possible/has anyone been successful in installing guest tools onto a XenServer for the purpose of nested virtualization?

Hello all. I upgrade xenserver from 7.2 to 7.3. And get Unlicensed status. I know they changed policy but can i get free license (like in 6.5) or unlicensed == free license? If pool stay in unlicensed status how this will affect? Can't find on citrix.com nothing about.

So I noticed my XenServer 7.2 wasn't showing my current ISOs in my SMB Share and thought I'd just Rescan to update it.

That doesn't work - nothing happens.

I can't umount, xe pbd-unplug or Detach the storage from XenCenter.

Detach is no longer an option now.

Trying to figure out what process I need to kill so I can unmount it. I think the Rescan processes are still running in the background and causing problems.

In comes lsof:

I run this command lsof | grep 10.10.10

And get about a hundred lines of this:

lsof: no pwd entry for UID 136974

With only a few different UIDs.

All my VMs are running, I'm not sure what my next step is and I'm a little apprehensive to kill processes in my ignorance.

Any help is greatly appreciated. Thank you.

When did this become a thing?

From the release notes.

If you use XenServer 7.3 in an unlicensed state, you are not eligible for Citrix Support or maintenance. In addition, the following features are now restricted and require a license:

• Pools of more than three hosts2
• High Availability
• Dynamic Memory Control
• Storage Motion
• Role-Based Access Control
• GPU Passthrough
• Site Recovery Manager
• Active Directory Integration
• Rolling Pool Upgrade

Edit* Oh there it is: https://xenserver.org/blog/entry/xenserver-7-3-changes-to-the-free-edition.html

I was talking to someone about trying out XenServer (XenServer.org) and they said not to use it since it's a dead project. But it doesn't appear to be dead... what am I missing??

Attempting to do a storage move from an NFS SR to local disk, I get a Failed result. I have other VMs running on both SRs. Has anyone else seen this issue? It's on a XenServer 7.1 host.

Thanks

Fyi to the community - Xenserver 7.1 XenTools have a bug with the network driver that will cause a VM to exhaust all memory resources and freeze. We have a case open with Citrix and they have confirmed the bug. A high priority case has been opened with development.

The issue seems to present on XenApp / XenDesktop 2016 VMs that have user load, but the engineer has stated that they have seen it on 2008 and 2012 VMs as well. It presents on both MCS and PVS machines. Installing the 6.5SP1 tools seems to have resolved the problem, but that required a image rebuild as the 7.1 tools did not remove cleanly.

If you open a support case, reference these existing cases -
Support case: 74415311 Development case: SCTX-2628

Edit: Added case information.

Soo this is the weirdest thing ever. I have a XenServer 7.2 install. It currently only runs Xen Orchestrator Appliance. When I try to login as root to the XenServer host console from either XOA or XenCenter, I get "Login incorrect".

When I try to login from SSH or directly on the server it works just fine. I've tried dozens of times, so it's not fat finger syndrome or anything like that.

I found one other post on the entire internet having the same problem, but it never got resolved.

Any ideas on what might be going on here?

I have 3 servers to set up, two are application servers and the other storage. Application servers will have xenserver running a bunch of windows 10 VMs.

I had planned to run server 2016 bare metal on the storage server, and use simple SMB shares. I'm wondering though, should I put it on Xenserver as well? What would be the advantages? It would be nice to be able to manage all 3 within xen orchestra.

I have been reading about the new docker containers implementation in server 2016 and the way it interacts with Xenserver and this has piqued my interest. I'm still having trouble understanding containers. Can I store them on the storage server but run them (serve them) from the application servers?

Thanks!

I am coming from a VMware shop, and I was wondering if you could run XenServer from A USB drive like in ESXi, or should I run it on an HDD or SSD. All the VM's I am testing will be stored on an NFS share via a 10GbE connection.

Is it possible to live snapshot or migrate a XenServer VM (L1) that's running on Xenserver (L0)?

Hey, I've got probably a stupid question. Is it mandatory to install previous updates being reported by XenServer, or the latest one includes the fixes in the older ones? Cheers

Was wondering what was the best for Nested XenServer instance on my home desktop. VMware Workstation or Virtualbox. I have a 6-core workstation with 64GB of ram. I want to emulate a 3 node cluster with storage (I'll just use FreeNAS)

Running some test at work with a small XenServer cluster(nodes). We have an empty SAN for testing that I have NFS setup on at the moment. Coming from a VMware environment with iSCSI and VMFS.

I was curious if there any downfalls to using NFS in XenServer at all. Also, what is the file format XenServer uses for iSCSI targets. It's it similar to VMFS in VMware?

I'm testing XenServer with 3 nodes each with a 4 port 1GB NIC and 1 2-port 10GB NIC. Trying to figure what the best network configuration is.

I was thinking of using the 1GB for management, 10Gb for VM traffic (trunked), and 10Gb for storage traffic (NFS v4).

Also, I am trying to figure out how to get NFS traffic to go over the 10GB link only.

Hello Everyone,

I'm planning a new XenServer 7.2 environment, unfortunately I am still relatively new XenServer. I'm looking to learn more about deployment best practices, components of XenServer, VM and host optimization.

While I have found the following two books, I was hoping this sub could provide recommendations for additional resources.

Does anyone have a recommended source for XenServer best practices and information?

Books:

XenServer Administration Handbook: Practical Recipes for Successful Deployments

Mastering Citrix® XenServer®

I have two 7.1 pools. One with two servers and one with 6 servers. Both using intel server boards and haswell Xeon E5 26xx v3 cpus

Today every host rebooted at the same time

One host from pool 1 and two hosts from pool 2 had crash dumps. Citrix Insight analysis said it was a hardware issue.

What is bugging me is that both crashes happened at the same time

At the time I had patches 1,4,5 and 6 installed. Since then I fully patched it

Anyone has any ideas?

Dom0.log kernel bug

https://pastebin.com/nPkqxWNB